music: 50's Chart Toppers: Name The Artist: The Thing?

Questions

In which Italian city is the original of Leonardo da Vinci's Last Supper to be seen?

Which U.S. state is nick named 'the First State' because it was the first to ratify the American Constitution in 1787?

Which band reached number two in the charts in 1988 with the album The First of a Million Kisses?

With which country did Britain break off diplomatic relations in April 1984?

Who was named Chairman of the U.S. Federal Reserve Board by Ronald Reagan in 1987, a post he still (February '99) holds?